<template>
    <div class="wrapper">

        <!-- header部分 -->
        <header>
            <p>商家信息</p>
        </header>

        <!-- 商家logo部分 -->
        <div class="business-logo">
            <img :src="business.businessImg">
        </div>

        <!-- 商家信息部分 -->
        <div class="business-info">
            <h1>{{business.businessName}}</h1>
            <p>&#165;{{business.starPrice}}起送 &#165;{{business.deliveryPrice}}配送</p>
            <p>{{business.businessExplain}}</p>
        </div>

        <!-- 食品列表部分 -->
        <ul class="food">
            <li v-for="(item,index) in foodArr">
                <div class="food-left">
                    <img :src="item.foodImg">
                    <div class="food-left-info">
                        <h3>{{item.foodName}}</h3>
                        <p>{{item.foodExplain}}</p>
                        <p>&#165;{{item.foodPrice}}</p>
                    </div>
                </div>
                <div class="food-right">
                    <div>
                        <i class="fa fa-minus-circle" @click="minus(index)" v-show="item.quantity!=0"></i>
                    </div>
                    <p><span v-show="item.quantity!=0">{{ item.quantity }}</span></p>
                    <div>
                        <i class="fa fa-plus-circle" @click="add(index)"></i>
                    </div>
                </div>
            </li>
           
        </ul>

        <!-- 购物车部分 -->
        <div class="cart">
            <div class="cart-left">
                <div class="cart-left-icon" :style="totalQuantity==0 ? 'background-color: #505051;' : 'background-color: #3190E8;'">
                    <i class="fa fa-shopping-cart"></i>
                    <div class="cart-left-icon-quantity" v-show="totalQuantity!=0">{{totalQuantity}}</div>
                </div>
                <div class="cart-left-info">
                    <p>&#165;{{ totalPrice }}</p>
                    <p>另需配送费{{business.deliveryPrice}}元</p>
                </div>
            </div>
            <div class="cart-right">
                <!-- 不够起送费 -->
                
                <div class="cart-right-item" v-show="totalPrice < business.starPrice" style="background-color: #535356;">
                    &#165;{{ business.deliveryPrice }}起送
                </div>
                
                <!-- 达到起送费 -->
                <div class="cart-right-item" @click="toOrder()" v-show="totalPrice >= business.starPrice">
                    去结算
                </div>
            </div>
        </div>

    </div>
</template>

<script>
    export default {
        name: 'BusinessInfo',
        data() {
            return {
                // 这里可以添加需要的数据
                businessId: null, // 商家ID
                business:{}, // 商家信息
                foodArr: [], // 食品列表
                user:{} // 用户信息
            }
        },
        created() {
            // 在组件创建时可以进行一些初始化操作
            // 比如获取商家信息等
            this.businessId = this.$route.query.businessId;
            this.user = this.$getSessionStorage('user');

             //console.log('获取到的订单类型ID:', this.orderTypedId);
            this.$axios.get('businesses/'+this.businessId)
            .then(response=>{
                //console.log('接口返回：', response.data);
                this.business = response.data; // 将获取到的商家列表存储到businessArr中
            }).catch(error=>{
                console.error('接口错误：', error);
            });

            if(this.user != null){
                this.listCart(); // 如果用户已登录，则获取购物车列表
            }

            this.$axios.get('food',{
                params: {
                businessId: this.businessId
                }
            }).then(response=>{
                //console.log('接口返回：', response.data);
                this.foodArr = response.data; // 将获取到的商家列表存储到businessArr中
                for (let i = 0; i < this.foodArr.length; i++) {
                    this.foodArr[i].quantity = 0; // 初始化每个食品的数量为0
                }
            }).catch(error=>{
                console.error('接口错误：', error);
            });

        },
        methods: {
            listCart(){
                this.$axios.get('carts',{
                    params:{
                        businessId: this.businessId,
                        userId: this.user.userId
                    }
                }).then(response=>{
                    let cartArr = response.data;
                    //遍历所有食品列表
                    for(let fooditem of this.foodArr){
                        fooditem.quantity = 0; // 初始化每个食品的数量为0
                        //遍历购物车列表
                        for(let cartitem of cartArr){
                            if(fooditem.foodId == cartitem.foodId){
                                fooditem.quantity = cartitem.quantity; // 更新食品数量
                               
                            }
                        }
                    }
                    //this.foodArr.sort(); 
                }).catch(error=>{
                    console.error('接口错误：', error);
                });
            },
            // 可以添加一些方法来处理用户交互
            add(index){
                if(this.user == null){
                    this.$router.push({ path: '/login' });
                    return;
                } 
                if(this.foodArr[index].quantity==0){
                    //insert
                    this.saveCart(index);
                }
                else{
                    //update
                    this.updateCart(index,1);
                }
            },
            minus(index){
                if(this.user == null){
                    this.$router.push({ path: '/login' });
                    return;
                } 

                if(this.foodArr[index].quantity>1){
                    //update
                    this.updateCart(index,-1);
                }
                else{
                    //delete
                    this.removeCart(index);
                }
            },
            saveCart(index){
                this.$axios.post('carts',this.$qs.stringify({
                    businessId: this.businessId,
                    userId: this.user.userId,
                    foodId: this.foodArr[index].foodId,
                })).then(response=>{
                    if(response.data==1){
                        // 添加购物车成功
                        this.foodArr[index].quantity = 1; 
                        //this.foodArr.sort();
                        //alert('添加购物车成功');
                    }
                    else{
                        alert('添加购物车失败');
                    }
                }).catch(error=>{
                console.error('接口错误：', error);
                });
            },
            updateCart(index,num){
                this.$axios.put('carts',this.$qs.stringify({
                    businessId: this.businessId,
                    userId: this.user.userId,
                    foodId: this.foodArr[index].foodId,
                    quantity: this.foodArr[index].quantity + num
                })).then(response=>{
                    if(response.data==1){
                        // 添加购物车成功
                        this.foodArr[index].quantity += num ; 
                        //this.foodArr.sort();
                        //alert('添加购物车成功');
                    }
                    else{
                        alert('添加购物车失败');
                    }
                }).catch(error=>{
                console.error('接口错误：', error);
                });
            },
            removeCart(index){
                this.$axios.delete('carts',{
                    params:{
                        businessId: this.businessId,
                        userId: this.user.userId,
                        foodId: this.foodArr[index].foodId
                    }
                }).then(response=>{
                    if(response.data==1){
                        // 添加购物车成功
                        this.foodArr[index].quantity = 0 ; 
                        //this.foodArr.sort();
                        //alert('添加购物车成功');
                    }
                    else{
                        alert('从购物车删除食品失败');
                    }
                }).catch(error=>{
                console.error('接口错误：', error);
                });
            },
            toOrder(){
                this.$router.push({path: '/orders',query:{
                    businessId: this.business.businessId,
                }})

            }
        },
        computed:{
            totalPrice(){
                let total=0;
                for(let fooditme of this.foodArr){
                    total += fooditme.foodPrice * fooditme.quantity;
                }
                return total;
            },
            totalQuantity(){
                let quantity=0;
                for(let fooditme of this.foodArr){
                    quantity += fooditme.quantity;
                }
                return quantity;

            },
            totalSettle(){
                let total = this.totalPrice + this.business.deliveryPrice;
                return total;

            }
        }
    }
</script>

<style scoped>
/****************** 总容器 ******************/
.wrapper {
    width: 100%;
    height: 100%;
}

/****************** header部分 ******************/
.wrapper header {
    width: 100%;
    height: 12vw;
    background-color: #0097FF;
    color: #fff;
    font-size: 4.8vw;

    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;

    display: flex;
    justify-content: center;
    align-items: center;
}

/****************** 商家logo部分 ******************/
.wrapper .business-logo {
    width: 100%;
    height: 35vw;
    /*使用上外边距避开header部分*/
    margin-top: 12vw;

    display: flex;
    justify-content: center;
    align-items: center;
}

.wrapper .business-logo img {
    width: 40vw;
    height: 30vw;
    border-radius: 5px;
}

/****************** 商家信息部分 ******************/
.wrapper .business-info {
    width: 100%;
    height: 20vw;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.wrapper .business-info h1 {
    font-size: 5vw;
}

.wrapper .business-info p {
    font-size: 3vw;
    color: #666;
    margin-top: 1vw;
}

/****************** 食品列表部分 ******************/
.wrapper .food {
    width: 100%;
    /*使用下外边距避开footer部分*/
    margin-bottom: 14vw;
}

.wrapper .food li {
    width: 100%;
    box-sizing: border-box;
    padding: 2.5vw;
    user-select: none;

    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wrapper .food li .food-left {
    display: flex;
    align-items: center;
}

.wrapper .food li .food-left img {
    width: 20vw;
    height: 20vw;
}

.wrapper .food li .food-left .food-left-info {
    margin-left: 3vw;
}

.wrapper .food li .food-left .food-left-info h3 {
    font-size: 3.8vw;
    color: #555;
}

.wrapper .food li .food-left .food-left-info p {
    font-size: 3vw;
    color: #888;
    margin-top: 2vw;
}

.wrapper .food li .food-right {
    width: 16vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wrapper .food li .food-right .fa-minus-circle {
    font-size: 5.5vw;
    color: #999;
    cursor: pointer;
}

.wrapper .food li .food-right p {
    font-size: 3.6vw;
    color: #333;
}

.wrapper .food li .food-right .fa-plus-circle {
    font-size: 5.5vw;
    color: #0097EF;
    cursor: pointer;
}

/****************** 购物车部分 ******************/
.wrapper .cart {
    width: 100%;
    height: 14vw;

    position: fixed;
    left: 0;
    bottom: 0;

    display: flex;
}

.wrapper .cart .cart-left {
    flex: 2;
    background-color: #505051;
    display: flex;
}

.wrapper .cart .cart-left .cart-left-icon {
    width: 16vw;
    height: 16vw;
    box-sizing: border-box;
    border: solid 1.6vw #444;
    border-radius: 8vw;
    background-color: #3190E8;
    font-size: 7vw;
    color: #fff;

    display: flex;
    justify-content: center;
    align-items: center;

    margin-top: -4vw;
    margin-left: 3vw;

    position: relative;
}

.wrapper .cart .cart-left .cart-left-icon-quantity {
    width: 5vw;
    height: 5vw;
    border-radius: 2.5vw;
    background-color: red;
    color: #fff;
    font-size: 3.6vw;

    display: flex;
    justify-content: center;
    align-items: center;

    position: absolute;
    right: -1.5vw;
    top: -1.5vw;
}

.wrapper .cart .cart-left .cart-left-info p:first-child {
    font-size: 4.5vw;
    color: #fff;
    margin-top: 1vw;
}

.wrapper .cart .cart-left .cart-left-info p:last-child {
    font-size: 2.8vw;
    color: #AAA;
}

.wrapper .cart .cart-right {
    flex: 1;
}

/*达到起送费时的样式*/
.wrapper .cart .cart-right .cart-right-item {
    width: 100%;
    height: 100%;
    background-color: #38CA73;
    color: #fff;
    font-size: 4.5vw;
    font-weight: 700;
    user-select: none;
    cursor: pointer;

    display: flex;
    justify-content: center;
    align-items: center;
}

/*不够起送费时的样式（只有背景色和鼠标样式的区别）*/
/*
.wrapper .cart .cart-right .cart-right-item {
    width: 100%;
    height: 100%;
    background-color: #535356;
    color: #fff;
    font-size: 4.5vw;
    font-weight: 700;
    user-select: none;

    display: flex;
    justify-content: center;
    align-items: center;
}
*/
</style>